Add odsreg under openstack-infra

Add odsreg application to gerrit under openstack-infra.
This won't use gate tests or generate tarballs for the time being.

This is the first step towards further automating the setup of
summit.openstack.org (currently manually set up).

Change-Id: I964f3a51029a87cddc5b24fd431b9880ccb64824
Reviewed-on: https://review.openstack.org/32129
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins
Add pylint checks for savanna main repo

Change-Id: I73be95fd720aca27244e2c2e0fc49d0531e11fc6
Reviewed-on: https://review.openstack.org/32328
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins